Abstract
Conductive inks are innovative materials that play an important role in modern electronic applications thanks to their electrical conductivity properties. Conductive ink prepared with iron (III) oxide (Fe3O4) offers a sustainable innovation in modern software and electronic applications thanks to both the use of cost-effective environmentally friendly materials and its high conductivity properties. In this study, the effects of polyvinyl alcohol ratio used as a binder in the production of Fe3O4-based conductive inks on the electrical, morphological, and rheological structures of the inks were investigated experimentally and statistically. Scanning electron microscopy, energy dispersive X-ray spectroscopy, and X-ray diffraction analyses were performed for the structural and morphological characterization of conductive inks prepared with the addition of different polyvinyl alcohol ratios (1%, 2%, 3%, 4%, and 5%). Also, viscosity measurements were made and recorded to observe the rheological behavior of the inks; resistance and conductivity measurements were made and evaluated for their electrical properties. A one-way analysis of variance was performed in the SPSS program using the numerical data obtained. As a result of experimental and statistical analysis, it was seen that the highest conductivity was obtained from conductive inks prepared using 1% polyvinyl alcohol binder by weight (1.0890 S/m), conductivity decreased as the binder ratio increased, and the lowest conductivity (0.0269 S/m) was obtained at a 5% polyvinyl alcohol ratio. However, it was observed that as the binder ratio increased from 1% to 5%, the viscosity value increased from 35.55 to 371.35 cP, increasing by 945%. In conclusion, it was seen that the polyvinyl alcohol ratio is a critical and essential parameter in the production of conductive ink, and the polyvinyl alcohol additive ratio directly affects performance.
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